Ask HN: What are examples of something overengineered?

Post-doc Haskell programmer, from http://www.willamette.edu/~fruehr/haskell/evolution.html

Singapore government using Etherum to verify official documents: https://www.verify.gov.sg/

The Juicero juicer: https://blog.bolt.io/juicero/

Most websites. Bring back basic HTML + CSS!

Using any large framework to manage state in browser JavaScript.